System Version 4 - Viessmann VITODENS 222-F Service Instructions Manual

Outdoor Reset Programming Unit
Installation Examples
Legend
1 Vitodens 222-F
2 Outside temperature sensor
3 Heating circuit without mixing valve A1
(heating circuit 1)
4 Heating circuit with mixing valve M2 (heating circuit 2)
5 Temperature limiter for limiting the maximum
temperature of underfloor heating systems
6 Supply temperature sensor M2
7 Heating circuit pump M2
8 Extension kit for one heating circuit with
mixing valve M2
9 Heat exchanger for system separation
qP Assembly kit with mixing valve (accessory)
36
(continued)
Vitodens 222-F B2TB 19 and 35 Service

System version 4

One heating circuit without mixing valve A1, one heating
circuit with mixing valve M2 and system separation
Function/system components
Operation with LPG
System only with one heating
circuit with mixing valve with
extension kit for mixing valve
(without unregulated heating
circuit) with DHW heating
System with DHW recirculation
pump:
DHW recirculation pump
connection at extension AM1,
terminal A2
Code
Adjust Factory set
condition
82:1 82:0
00:4 00:6
-- 34:0